This will be interesting to see how it's enforced.
I have a log burner which supplements our regular heating system, i tend to buy wet wood and store it for 2+ years before burning as it can be a lot cheaper than buying already seasoned wood.
I do tend to buy off Facebook market place from 'a guy with a pickup' so i'd image this law will be to stop people like him selling to people who don't know what they're doing and burning it straight away. But say now i can get a ton bag for less than £40 from some dodgy facebook guy, if i'm forced to buy kiln dried stuff from one of the big local suppliers i'd be looking at well over £100-£120 per bag which makes it not really worth bothering with but if it does improve the air quality for everyone i'll still be for it and i'll just use the burner sparingly on the odd weekend and Christmas.
There is a house about 50 metres away from us which burns coal and god knows what, always thick black plumes of smoke coming out of their chimney, if this stops them doing whatever they're doing then that'll be a good thing.